The defect
General Motors LLC (GM) is recalling certain 2020 Chevrolet Corvette and Cadillac CT4, CT5 and XT4, 2021 Chevrolet Trailblazer, and 2020-2021 Buick Encore GX vehicles. Sensor connection contamination in the electronic brake boost system may cause an interruption of communication between the sensor and the brake boost system.
The risk
If communication with the sensor is interrupted, the electronic brake boost assist could be lost. Extra pedal force will be required to slow and stop the vehicle, increasing the risk of a crash.
The remedy
GM will notify owners, and dealers will replace the electronic brake boost module, free of charge. The recall began December 9, 2020. Owners may contact Chevrolet customer service at 1-800-630-2438, Cadillac customer service at 1-800-333-4223, or Buick customer service at 1-800-521-7300. GM's number for this recall is A202307260.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Buick Encore GX | 2020, 2021 |
| Cadillac CT4 | 2020 |
| Cadillac CT5 | 2020 |
| Cadillac XT4 | 2020 |
| Chevrolet Corvette | 2020 |
| Chevrolet Trailblazer | 2021 |
Components: SERVICE BRAKES
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Buick Encore GX | 2020 | 70 | 2 |
| Buick Encore GX | 2021 | 53 | 2 |
| Cadillac CT4 | 2020 | 8 | 4 |
| Cadillac CT5 | 2020 | 39 | 4 |
| Cadillac XT4 | 2020 | 18 | 5 |
| Chevrolet Corvette | 2020 | 34 | 4 |
| Chevrolet Trailblazer | 2021 | 196 | 4 |
Other service brakes recalls in 2020
14 of the 782 recall campaigns reported to NHTSA in 2020 concerned the service brakes; General Motors LLC filed 272 campaigns in all.
| 20V476000 13 Aug 2020 | BMW of North America, LLC |
| 20V469000 10 Aug 2020 | Ford Motor Company |
| 20V454000 4 Aug 2020 | Indian Motorcycle Company |
| 20V435000 28 Jul 2020 | Daimler Trucks North America LLC |
| 20V323000 4 Jun 2020 | Braun Ambulances |
| 20V313000 28 May 2020 | Frazer |
| 20V291000 20 May 2020 | Halcore Group, Inc. |
| 20V284000 20 May 2020 | REV Ambulance Group Orlando, INC. |
NHTSA recalls (public domain) · all recalls of 2020